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4. A certain gas obeys the van der Waals equation with a = 0.76 m Pa mol-?. Its volume is found to be 3.50 x 10 m mol-1 at 23
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vndn Wwaal eaation f qas (P+ ( nRT RT 6 Cr P R 8.314 mB ea Kmot T : 236 K V-nb nRT १ + RT O- Pa (3-5015 1962- - Pv RT 9compeseanbe wen and fer RT PRT Рь + Pb - 2 = RT f/RT Now f ol T 336 K 41X 596xo x0x30x* 0 33 0.398 0 2 8

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